Ring resawing machine



Sept. 5, 1933. J. H. HOERN RING REsAwING MACHINE Filed April 2, 1950 '7' Sheets-Sheet l '/INTOR JSe/v/r J1, f/oern.

fw# w I A ORNEYS.

'BY l Sept. 5, 1933. J. H. HOERN RING RESAWING MACHINE Filed April 2, 1930 '7 Sheets-Sheet 2 J. H. HOERN RING RESAWING MACHINE Filed April 2, 1930 sept. 5, 1933.

7 Sheets-Sheet 3 A TTORNEY Sept. 5; 1933. J. H. HOERN RING RESAWING MACHINE '7 Sheets-Sheet 5 Filed April 2, 1950 IN VEN TOR JS e A TTORNE YS.

' Sept. 5, 1933. J. H. HoERN RING RESAWING MACHINE '7 Sheets-Sheet 6 Filed April 2, 1950 4 11. INVENTOR Se??? JffJ/oerfz. v

ATTORNEYS.

Sept. 5, 1933. J. H. HOERN RING RESAWING MACHINE Filed April 2 1930 7 Sheets-Sheet 7 INVENTOR dose/772 Woef/72.

l e l a I l d RTORNEY Patented Sept. 5, 1933 PATENT' oFFicr.

RING RESAWING MACHINE Joseph H. Hoorn, Saginaw, Mich., asslg'nor to Wilcox-Rich Corporation Application April 2, 1930. Serial N0. 441,091

'7 Claims.

This invention relates to a ring re-sawing machine of that automatic type in which a turret table, preferably inclined, is provided with means for its intermittent rotative advance and with means for holding both said table' and a ring which is presented for sawing against displacement; but novel ring-holding means, preferably pneumatic, are herein made subject to a remote and automatic synchronizing control.

Although the form and dimensions of the clearance gap inv piston rings is recognized to be a matter of importance, and the general purposes oi re-sawing piston rings before or after nishing operations are well known, reference may be made to one spe'cic organization employing a turret in connection with the operations referred to, such being described and claimed in my co-pending application, Serial No. 389,661, filed August 31st, 1929. Insome of its aspects the present invention might be referred to as an improvement upon that of the mentioned application-as in its provision of novel means to af'- sure a correct positioning, `aclamping and an ejection of rings, and also in its provision of` special curvature-determining and ring-ejecting devices capable of use either with or separateiy from any pneumatic clamp; but the present organization contemplatestranslational` movement of a comparatively light saw or millingv cutter, preferably secured in a dependent frame, rather than an advance `and retraction of the heavy turret, to effect each sawing operation; and also the use of special means for establishing desired timing relationships between all necessary operations; and it will accordingly be vcompletely described without further reference tothe mentioned pending case.

Other objects of the present invention may be best appreciatedfrom the following description of an illustrative embodiment thereof, taken in connection with the appended claims' and the accompanying drawings, and intended to be so complete as to obviate need ofw further reference to the mentioned pending case.v

Fig. 1 is a side elevational view, with airn control conduits cut away.

Fig. 2 is a corresponding top plan view, with turret parts broken away.

Fig. 3 is a front or end elevational view, taken as if from the position of an operative at the left oi Fig. 1.

Fig. 4 is a vertical sectional view, taken substantially as suggested by the broken line 4-4 of Fig. 1. v

Fig. 5 is a sectional View, taken substantially (Cl. S90-15) as suggested: by the inclined'line 5--5 of Fig, .3, and the line 5 5v of Fig. 7, but with parts broken away to different levels.

Figs. 6 and 7 respectively are sectional views taken substantially as suggested by the lines 6 6 and 7 7 of Fig. 5. Figs. 8, 9, 10 and 11 are respectively detail sectional views taken substantially as suggested by lines correspondingly numbered upon Fig. 7 Fig. 12 is al diagrammatic detail View taken substantially as suggested by .line 1-2-12 of Fig. 1.

Fig. 13 is a view corresponding to Fig. 5, but showing an alternative construction.

Figs. 14 and 15 are partial sections on lines 70' 14-14 and 15-15 or" Fig. 13.

As to the general features of the organization selected for present description, Figs. 1, 2 and 3 will be seen to disclose, upon a main base element B, van inclined turret organization T; the table thereof may be intermittently rotated from a remote motor M through a main drive shaft DS and a wormv and worm gear W, W and the illustrated transmission includes also fore-andaft shafts FS and AS between which is interposed a housed Geneva gear G. A main frame MF on the base B'supports also an elevated bracket EB from which is swung a pendent frame PF for a saw or cutter S,-this being preferably advanced by a spring SP and retracted by means of a lever L and a longitudinally movable link AL. The saw S may be drivenv from the motor M through a belt transmission system'comprising pulleys P, P and PU, PUr-thelatter pair being respectively carried by a fixed or other upper shaft US and a saw shaft SS mounted on the pendent frame PF, and additional pulleys PL, PL being used to transmit motion between parallel shafts MS and DS. A system comprising a compressed air control cylinder AC and a clamp control-cylinder 'CC may provide interdependent means for manipulating, at suitable times with reference to the movements of the table of the turret organization T and the saw S,'a ring clamping device RC,-the latter' being shown as carried by a yoke Y; and a cam. C'on shaft AS may control parts of a locking device for theV rotatable table of turret "1".; but `details of the mentioned devices and of variousv auxiliary means will obviously require separate description.

The shafts DS and AS (each being provided with any desired bearings additional to those' shown) may each contain a reducing and/or flexible coupling 20; and the mentioned Geneva gear Gis shown as including a wrist ypin 22 adaptboss.

ed to enter, at suitably timed intervals, slots 23 in a terminal plate 24 on shaft FS. This shaft is shown as provided with a bearing 25, secured to the main frame MF; and the mentioned cam C, upon shaft AS, is shown as engaging a roller 26 upon one end of a lever 27. This may be pivoted, as at 28, within a xed base portion 29 of the mentioned turret organization, and employed to operate the indexing device.

Referring now to Fig. 5 for a general disclosure of the turret organization T, the lever 27 is shown as provided with a laterally extending cam pin 30. This pin, or a hardened sleeve or roller 3l thereon, is intended accurately to iit within a cam slot 32, provided in a slidable element or bolt 33, shown as extending through a sleeve 34 and as terminating in a conical head 35. A downwardly extending portion 36 of bolt 33 is shown as guided by an opening 37 provided in the fixed base 29; and a compression spring 38 is shown as interposed between said base and a shoulder 39 upon the slidable element 33 in such manner as to bias the latter toward an upward position-iadapting it to cooperate with any one of a plurality of conical or other socket elements 4i). These may be provided in the mentioned table 4l of the turret organization 'I' to receive bolt 33 wherever the position of cam C on the constantly rotated shaft AS permits. The table 4l is shown as provided near its edge with bearings 42 and as centrally provided withy an apertured boss within which is secured a central shaft 43, pro# vided with a shouldered collar 44 opposite said A downwardly extending portion 43 of this shaft may carry not only upper sets ofbearings 45 and 46 and a lower set of bearings 47 (the bearings 45 and 47 being shown as respectively received in cups 48 and 49 provided in horizontal webs 50 and 5l integral with the fixed of the bolt 33 but also the advance and retraction of the saw S, or its equivalent, are intended to be effected during-intervals of rest of the table 4l.

Referring now more particularly to ringhandling features Well shown in Figs. 5-10, the

table 4l is shown as provided with four chucks or ring-receiving elements 55, of such configura tion that rings R may be dropped or sprung therein and retained by any suitable clamping means provided therefor at a cutting station CS,--this lbeing shown as diametricaliy opposite a loading station LS. 1n the illustrated embodiment, a clamping element 56 of the ring clamping device RC is shown as connected with a plunger organi- `zation 57 by means of a rod 58 and a ball-and- 60.;

socket joint 59,-the ball 'thereof being retained by means of a plate 60 and screws 6l. To assure a proper positioning and configuration of the rings R during advance and retraction of the saw S, or its equivalent, receiving elements 55 may be provided not only with interruptionapermitting the advance of the saw, but with the inclined or other special surfaces 62 suitable for engagement by adjusting means such as screws 63 (see Figs. 7 and 8) whereby a predetermined configuration may be imparted to the receiving elements 55; and

the coniiguration of the clamping element 55, whether advanced by hydraulic or other means, may be such as positively or resiliently to conform the inserted ring R to the receiving element 55.

Assuming the rings R have been previously sawed, in order to provide for the insertion thereof in a desired relationship to the plane of advance of the saw S, means such as a thin tongue-like member 64, radially and slidably mounted for advance and retraction to and from or in the plane of the rings R, may be provided; and, in Figs. 5, 7, 9 and l0, said tongue-like member is shown as carried by a slidable element 65 (which may be held down by plates engaging flanges thereon) having a transverse slot 66 suitable for engagement by a cam element such as a pin 67 upon an arm 68. A limited rotational movement may be imparted thereto, at suitable times (and in opposition to a spring 68a surrounding a short shaft 68h, and secured on a guide 68e) by means such as a cam finger 69, adapted to engage a cooperating fixed cam element 70,-shown as carried by a mentioned web 50. lit will be understood that during an interval of rest at the loading station LS, the tongue 64 is intended to occupy an outer position, such as that in which it is shown at the right of Fig. 7, in order to pre-determine the position of the slot in any ring there inserted by manual or other means; but that, preferably ben fore the step-by-step rotation of the table 41j brings a ring to rest at the station CS, the tongue 64 is retracted; and that either manual or auto matic means may be employed to eject the successive rings R at an unloading or ejection station ES after the completion of a sawing or resawing operation. Automatically and reliably to eiiect a lifting of rings at this station (within easy reach of an operative assumed to sit orv stand opposite the loading station LS) additional camoperated means, including a slidable element 71 (vertically movable against the action of a spring 71a by a suitable cam 71h therebelow) and a pin 72, extending beneath a ring R, may be employed; and it will be understood that the device last referred to may be duplicated, if desired, at opposite points in the circumference of the respective rings, and also that the interposition of an arm 7l' between elements 71 and 72 enables the radial position of the latter to be adapted to larger or smaller rings.

In order to permit some resilient response of the clamping element 56 to any special configuration that may have been given to the ring-receiving element 55, and to bring any ring thereinrto aV like configuration, it is suggested, in Figs. 6 and 7 ,i

that the clamping element 56 be provided with arcuate kerfs or slots 73, shown as extending about a quadrants distance en each sideof a sawreceiving notch 74; and it will have been noted that the plunger organization 57 is so disposed within a mentioned cylinder CC and so constructed as to permit pneumatic or other hydraulic manipulation of the clamping element 56 through the rod 58. As best shown in Fig. 3, the Ycylinder CC may be directly supported from the stationary yoke Y, extending over the cutting station CS; the plunger organization 57 may include a leather or other cupped element 75, providing a iiuid-receiv ing chamber 76 thereabove; an interior guide 77 for the rod 58 may be surrounded by a clampm retracting spring 78; the cupped element 75fmay be retained between a plate 79, engaged by said spring, and a cooperating plate Si), shown as retained by a nut 8l, upon the end of the rod 58; and air or other fluid may be admitted to the chamber 76 and permitted to exit therefrom, at suitable times, by either manual or automatic means,the latter being preferred. inadvertent rotational displacement of the clamping elements 56 may be obviated by any desired means,--such one of said links.

as the slidable engagementv of a nger 81a1within a socket element S'lb. f l

Returning now to Figs. 1, 2 and 4, properly to manipulate the saw S, the. link AL is shown as adjustable by means comprising a turnbuckle element 82, interposed between threaded members 8S and 84, theseflatter being respectively connect'- ed to thependentv frame PF and thelever L by pivot pins 85 and 06; and said lever is shown as hung from an arm 87 by means of an additional pivot. pin 88. The pendent frame PF is shown as hung from the upper shaft US, extending through clamping'elements 89 on the elevated bracket EB, by bearing yorgarnzations 90 and 91,' and said pendent frame may include, at its lower end, a barrel or bored-out portion 92', adapted to receive bearings 93 and 94 for the saw shaft SS,"-the'se latter being shown as respectively heldin place between the shoulder 95 and a plate 96 (carrying a. gland organization 97, adjacent thepulley PU) and an additional shoulder 98 with which a plate 99 (carrying a gland organiaation 100) cooperates. Any usual or desired means may be emplayed to holdv the milling cutter or saw S in its indicatedfpositionupon the shaftSS.; and the pendent frame may be advanced at suitably timed intervals when the table el is4 at rest, by means such as the mentioned spring SP. Thisv is shown as housed within a casing 101 which may provide or contain a stop 102 therefor and may receive also a slidable element 103, connected" with the pendent frame PF by a rod 104,-Which may be pivotallysecured at VYits respective ends to said frame and to said slidable element.

The lever Lis preferably provided with means.

as connected by a pivot 108 with an extension 109` upon the lever L, may be employed. The cylinder AC is shown provided with an air inlet pipe and an air outlet pipe 111 and also with pipes 112 and 113 respectively leading to and from openings 114 and 115 in the cylinder CC of the clamping organization.

The air cylinder AC may be pivotally supported, as at 116, upon a post 117; and the adjustable link AL has been referred to as serving positively to retract the pendent frame PF and the saw S. Frame PF and the lever L being related sub stantially as parallel links, it may be regarded as comparatively immaterial whether saw-advancing pressure is applied to the former (as by means of spring SP) or to the latter, the remotetiming of the operation of clamping device RC being, iin any case, preferably effected by valve-operating means directly or indirectly connected with that, when this construction is employed, each rotation of cam 106 produces not only a withdrawal of saw S but such an inward movement of valve 118, upon said Withdrawal, as to release,

clamp RC by an outflow through a passage 119- i `in readiness for an advance of the turret-table;

For example, as suggested inA andan outwardmovement of valve 118, as effected by thefaction of .spring SP on frame PF after said: table comes to rest While Aa low portion of the 'carni 106 engagesv the cam roller 105 attached to the lever L, bringspassage 120 of the valve into register with theaireinlet 110 and the lead line 112` to the clampRC-.Which is thereupon actuatedfto clamp'the next ring in advance of itsrengagementl by the saw S. f

'Partsr similar to vthose above referredV tovv are designated bylike character with an added *,a inv the disclosure; of an alternative form in Figs. 13,- 14 and 15;-.but bevel-tippedflocating tongues 64a. are shown as movable tofand from the planes of rings R' bylevers 65a,-actuated by pins 67dv in opposition A to springsp6-2a. Said levers may be retained beneathplates 121e by means .suc-l1 as blocks122a carryingpivots 123a andsecured by separate screws 124:1. The tongues 64a may enter ring slots. to any desired extent; and it is suggested inv `iigs 14an'd 15 that tongues 64a be retained'on levers 65a by means such asangle blocks 124a";.and screws 125a. Fig. 14 shows not only aY cam 70a for the elevationr of. pins 67a at station LS but a plurality of cams 71h, '71h' for the simultaneousy lifting ofv oppositely disposed ring-ejecting pins 72a, 72a"V at ejection station ES; .i f f The mode of operation of the various interdependent mechanisms ofthe present lre-sawing machine having been indicated in connection with the .description thereof, it will be understood that rings are placed in the respective chucks on the intermittently advanced table 41 at theloading station LS,-automatic means being there provided tolassure the advance of each locating tongue in such manner as to assure a desired orientation of the rings; and that, after leaving this station, each tongue is retracted (by v means including a spring 68a or 68) before a ring is clamped. (in any vdesired configuration,4 and during a pause at the cutting station CS) ,by any pneumatic or other ring-clamping device RC provided4 upon the stationary yoke Y,-the upper end 35 of the bolt33 of `theindexing device being meantime seated in a socket 40. Each ring being thus held sprung to a desired configuration, by the chuck and the rigid or resilient parts of the movable clamping member (in order to assure a predetermined angular relationship between the cut surfaces) the saw S is then advanced and retracted; the clamp is automatically released (as by the controlled escape of the operating Huid through the pipes 113 and 111). and the bolt 33 is withdrawn before any additional movement is imparted to the table 41, or its equivalent;v and said additional movement is incidentally effective to eject the mentioned ring at the station ES and to bring an empty chuck opposite the loading station LS.

Although the foregoing description has included complete details of but a single embodiment of the present invention, it should be understood not only that various features thereof might be independently used, but also that numerous modications, additional to any suggested herein, might easily be devised by workers informed of the foregoing-all Without departure from the scope of the present invention as the same is indicated in the following claims.

I claim:

1. A ring re-sawing machine including, in combination, a saw suspended for rotatable and arcuate movement, a rotatable table tilted at an angle to said saw corresponding to the slope of the ring slot, means on said table for receiving a plurality of rings, means for positioning the slot in said ring relative to said receiving means, means for advancing said table to move the ring adjacent to said saw, and means for moving said saw after each advancement of the table.

2. A ring re-sawing machine including, in combination, a saw suspended for rotatable and arcuate movement, a rotatable table tilted at an angle to said saw corresponding to the slope of the ring slot, a plurality of ring receiving elements on said table, means for positioning the ring slots relative to'said receiving elements and means for withdrawing said positioning means before advancing said saw through said slot.

3. A ring re-sawing machine, including, in combination, a saw mounted for rotational and advancing movements, a rotatable table tilted at an angle to said saw corresponding to the slope of the ring'slot, a plurality of ring sizing elements disposed on said top, a loading point adjacent to said table at which a ring is disposed in one oi said receiving means, a retrievable tongue positioned to locate the slot of the ring relative to the table, means for retrieving said tongue, clamping means adjacent to said saw for expanding the ring in said sizing element, means for advancing and retracting said saw through said slot, means for Areleasing said clamping element, and means for advancing the table thereafter.

4. A ring re-sawing machine including, in combination, a saw suspended for rotatable and arcuate movement, a rotatable table tilted at an angle to said saw corresponding to the slope of the ring slot, means on said table for receiving a plurality of rings, fluid actuated clamping means disposed adjacent to said saw for clamping the ring in said receiving means, means for advancing said saw through said slot in the ring, and cam means for withdrawing said saw from said slot and for controlling the flow of fluid to said head for releasing the clamping means after the sawing operation.

5. A ring re-sawing machine including, in combination, a saw suspended for rotatable and arcuate movement, a rotatable table tilted at an angle to said saw corresponding to the slope of the ring slot, means on said table for receiving a plurality of rings, fluid actuated clamping means disposed adjacent to said saw for clamping the ring in said receiving means, means for ad'- vancing said saw through the slot in the ring, cam means for withdrawing said saw from said slot and for controlling the flow of fluid to said clamping means effecting its release, and means for raising said ring from said receiving means thereafter. Y

6. A ring re-sawing machine including, in combination, a saw suspended for rotatable and arcuate movement, a rotatable table tilted at an angle to said saw corresponding to the slope of said ring slot, means for rotating said table, means for locking said table at predetermined points, a plurality of means on said table for receiving the rings, a retrievable tongue extensible into the slot of the ring at the loading position of the table, means for retrieving said tongue and for clamping the ring thereafter adjacent to said saw, means for advancing and retrieving said saw to machine the slot to accurate dimensions, and means for unlocking said table and advancing it a predetermined amount to position another ring adjacent the saw and for again locking the table.

7. A ring re-sawing machine including, in combination, a saw suspended for rotatable and arcuate movement, a rotatable table tilted at an angle to said saw corresponding to the slope of the ring slot, points about said table which include a loading point, a sawing point and an unloading point, a movable tongue projecting into the slot of the ring at the loading point of the station, means for retrieving said tongue during advancement of the table to the sawing position, a clamp for securing said ring during the sawing operation, means for releasing said clamp before the next advancement of said table, and means for raising said ring when positioned adjacent to `the unloading point.

JOSEPH H. HOERN. 

